ABSTRACT

Polymers are highly promising materials for capturing carbon dioxide (CO₂), a greenhouse gas. Hence in this work, we prepared phyllosilicate supported mesoporous polymer via reversible addition–fragmentation chain transfer (RAFT) polymerisation, which is the one among the controlled radical polymerisation. The mesoporous material anchored on dodecanethiol trithiocarbonate acts as a chain transfer agent (CTA) for the polymerisation of chloromethyl styrene and further conversion to quaternary ammonium compound which is effective to trap CO₂ using tertiary amine. The synthesised porous phyllosilicate/polymer nanocomposites have been characterised by using various analytical tools. The CO₂ sorption experiments were carried out by passing CO₂ onto the synthesised porous phyllosilicate/polymer nanocomposites. The sorption kinetics was monitored by X-Ray photoelectron spectroscopy (XPS) and Fourier-transform infrared spectroscopy (FT-IR) spectra in the presence of carbonate were obtained by reaction of quaternary ammonium hydroxide and CO₂. The phyllosilicate anchored macromolecular CTA (macro-CTA) and the surface-initiated polymer nanocomposites encompassed apparent surface areas of 94.5 and 26.8 m² g⁻¹, respectively. In addition, the total pore volumes calculated for the macro-CTA and polymer were found to be 0.27 and 0.095 cm³g⁻¹, while the average pore sizes were 14.24 and 11.46 nm, respectively. The CO₂ sorption capacity of the phyllosilicate/polymer nanocomposites, monitored at different temperatures, is the fastest for 25°C but slower for the sample treated at 50°C which may due to the dipole and quadrupole interaction.

 抽象的

聚合物是捕获温室气体二氧化碳（CO ₂ ）的非常有前途的材料。因此，在这项工作中，我们通过可逆加成断裂链转移（RAFT）聚合制备了页硅酸盐负载的介孔聚合物，这是受控自由基聚合中的一种。锚定在十二烷硫醇三硫代碳酸酯上的介孔材料充当链转移剂(CTA)，用于氯甲基苯乙烯的聚合并进一步转化为季铵化合物，季铵化合物可有效地使用叔胺捕集CO ₂ 。使用各种分析工具对合成的多孔层状硅酸盐/聚合物纳米复合材料进行了表征。通过将CO ₂传递到合成的多孔页硅酸盐/聚合物纳米复合材料上来进行CO ₂吸附实验。通过X射线光电子能谱(XPS)监测吸附动力学，并且通过季铵氢氧化物和CO ₂的反应获得碳酸盐存在下的傅里叶变换红外光谱(FT-IR)光谱。页硅酸盐锚定的大分子CTA (macro-CTA)和表面引发的聚合物纳米复合材料的表观表面积分别为94.5和26.8 m ² g ^-1 。此外，发现宏观CTA和聚合物的总孔体积为0.27和0.095 cm ³ g ^-1 ，而平均孔径分别为14.24和11.46 nm。 在不同温度下监测的页硅酸盐/聚合物纳米复合材料的CO ₂吸附能力在25°C时最快，但在50°C下处理的样品则较慢，这可能是由于偶极和四极相互作用。